• Korean journal of communication and information
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• v.49
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• pp.39-56
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• 2010

This study on the exposed the viewers diversity as a basic cable television service. Diversity is the most basic goal of broadcasting policy has important implications. But still, such as cable and pay-media research on the viewing diversity has made a limited basis. SO much to offer for the cable offers viewers receive the number of channels available to compare the diversity of the field was verified. Price rises of analysis for the cable the more the number of channels offered to supply the channel has increased the diversity of the field. SO granted in accordance with the results of a market strategy, but for a variety of channels to be provided by a policy perspective, the price depending on the choice of a variety of audiences can be quite limited means. That is a wide range of viewers watching the channel had a right to be limited. These phenomena to improve the pay television service and the need to manage the Product channel diversity index was raised.

• Journal of the Institute of Electronics Engineers of Korea TE
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• v.37 no.1
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• pp.42-49
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• 2000

A major technical issue related to supporting multiple classes of service in IMT-2000 is the efficient management of limited channel. The selection of channel access control technique has a significant impact on user QOS, system capacity, and is therefore an important design parameter. In this paper, to achieve the service at resonable QOS level, while utilizing channel resource effectively, some improved methods are proposed by analyzing of the recently released methods.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.34 no.5B
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• pp.463-468
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• 2009

In VANET(Vheicle Ad hoc Network), the researches based on the wireless LAN are conducting and the method based on 802.11a is being adapted in IEEE 802.11p WAVE(Wireless Access in Vehicular Environments). However, wireless LAN which uses a single channel in a competition can cause transmission delays because of a frequent collision and a use of CSMA/CA to avoid competition in VANET requiring a fast access. In this paper, we designed CMMP (Clustering based Multi-channel MAC protocol) adequate to VANET and then confirmed the appropriate channel conditions in a V2V communication on the basis of this protocol. The simulation results showed that a packet collision and a transmission delay by the use of an existing single channel based on the contention decreased more than 60% by CMMP.

• Journal of The Korean Association of Information Education
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• v.15 no.4
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• pp.589-601
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• 2011

Recent increase in the number of websites as one of the most used communication channels beyond just for promotion has led to the increased need for integrated management for member websites, as well as brand sharing among websites. Studies on how to deal with website authorship issues more efficiently has been ongoing since early 2000. However, these studies have mostly dealt with single website management and were not applicable to authoring and management related issues for centralized platform for multiple websites. This study intends to design a management platform for authoring and managing of centralized websites in the education field, utilizing various designs while building websites.

• Proceedings of the Korean DIstribution Association Conference
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• 2000.10a
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• pp.1-13
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• 2000

공급 사슬 관리 (Supply Chain Management, 이하 SCM)란, 원자재를 구매하여(Buy), 완제품을 생산하고(Make), 이를 유통 채널을 통하여 운송/보관하며(Move/store), 최종 소비자에게 판매하는(Sell)데 포함되는 비즈니스 네트워크를 다룹니다. (중략)

• Journal of the Institute of Electronics and Information Engineers
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• v.51 no.4
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• pp.33-41
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• 2014

This paper presents an effective memory access method for a high-speed data transfer on mobile systems using a direct memory access controller that considers the characteristics of a multi-port memory controller. The direct memory access controller has an integrated channel management function to control multiple direct memory access channels. The channels are physically separated and operate independently from each other. Experimental results show that the proposed direct memory access method improves the transfer performance by up to 72% and 69% on read and write transfer cycles, respectively. The total number of transfer cycles of the proposed method is 63% less than in a commercial method under 4-channel access.

• Journal of Digital Contents Society
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• v.19 no.9
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• pp.1751-1758
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• 2018

An integrated medical information system that integrates systems consisting of different environments centered on hospital information systems should be provided as a system that prioritizes the improvement of the quality of medical services, customer satisfaction, and patient safety. The RBAC-based medical information system is granted the access right according to task type, role, and rules. Through this, it is possible to use SMS channel, medical reservation and cancellation, customized statistics, and CRM / EMR interworking service using multi-channel to enable communication service without help of counselor and reduce the default rate of reservation patient, Operational improvement services can be extended to medical staff, patients and their families, as well as expanding to important decisions for patients.

• Journal of the Korea institute for structural maintenance and inspection
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• v.12 no.2
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• pp.171-180
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• 2008

The aim of this paper is to clarify the structural performance of RC beams strengthened with Carbon Fibre Reinforced Polymer(CFRP) plates using channel-type anchorage system. Twelve RC beams were specifically designed without and with a channel-type anchorage system, which was carefully detailed to enhance the benefits of the strengthening plates. All the twelve beams were identical in terms of their geometry but varied in their internal reinforcement, concrete strength. All the beams were tested under four point bending and extensively instrumented to monitor strains, cracking, load capacity and failure modes. The structural response of all the twelve beams is then critically analyzed in terms of deformability, strength and failure processes. It is shown that with a channel-type anchorage system, a brittle debonding failure of a strengthened beam can be transformed to an almost ductile failure with well-defined enhancement of structural performance in terms of both deformation and strength.

• Proceedings of the Korean Information Science Society Conference
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• 2006.06d
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• pp.340-342
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• 2006

본 논문의 연구에서는 IEEE 802.11e HCCA에서 멀티미디어와 같은 트래픽에 대해 보다 안정적인 전송을 위하여 일정 시간 동안 채널을 사용할 수 있도록 HC (Hyper Coordinator)가 허가함에 있어서 IEEE 802.11 PHY (physical layer)의 모듈레이션 변화에 따른 동적인 대응이 필요함을 논하고, 문제 해결을 위한 방안을 제시하였다. IEEE 802.11e의 HC는 멀티미디어와 같은 트래픽의 전송을 위하여 BSS (Basic Service Set) 안에 있는 무선 단말기와 TSPEC (Traffic Specification)을 이용하여 CAP (Controlled Access Phase) 채널을 설정하고 관리한다. 그러나 HC가 TSPEC을 설정할 당시와는 달리 무선 단말기들은 이동하거나 물리적으로 채널 환경의 변화로 IEEE 802.11 PHY의 모듈레이터 변경으로 설정된 TXOP 듀레이션 (duration)이 적절하지 않게 된다. 이와 같은 문제점을 밝히고 해결 방안을 아래와 같이 제안한다. 실험을 위해서는 NS-2와 유사하지만 보다 세련된 시뮬레이터를 활용하였다.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2006.05a
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• pp.1819-1824
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• 2006

고객과의 지속적 관계를 통하여 기업 이익을 극대화시키는 CRM (Custom Relationship Management) 시스템은 국내에서는 고객 정보를 분석하여 마케팅 전략을 수립하는 분석 CRM 중심으로 구축되었다. 하지만 인터넷 및 모바일 기술의 발전으로 고객과의 접점이 다양한 채널을 통해서 이루어지고 있으나, 채널별 고객 정보가 체계적으로 관리되지 못하며, 고객에 즉시 대응할 수 있는 체계가 미흡하여 고객이 원하는 시점에 고객을 만족시켜 주지 못하고 있는 실정이다. 따라서 오프라인 중심의 분석 CRM 보다는 운영 CRM이나 협업 CRM 측면을 고려한 실시간(real-time) CRM을 목표로 하며, 다양한 기관과 다양한 채널로 구성된 고객 접점을 체계화하여 고객이 원하는 시점에 고객을 만족시킬 수 있는 CRM 모델을 도출하고자 한다. 본 논문에서는 이러한 모델을 근거로 새로운 관점의 정보기술 아키텍처를 제안한다. 이 아키텍처는 이질적인 유무선 환경을 위하여 XML 기반의 데이터인터페이스를 제시하고, 비즈니스 규칙(rule) 시스템과 데이터마이닝(data mining) 시스템을 포함하고 있다.